Standard Integration Filter (SIF) - Design tradeoffs for strapdown INS
Abstract
A 27-state three-axis Standard Integration Filter (SIF) which integrates the USAF Standard INS with external navigation aids has been formulated. This paper summarizes two key tradeoff investigations which were conducted in conjunction with the design of that portion of the filter which interfaces with the ring-laser gyro strapdown Standard INS. First, the state vector used to correct level-axes INS errors is described and associated navigation error projections are presented. Then, the computational and accuracy tradeoffs involved in selecting the propagation algorithm for numerically integrating the filter differential equations are described.
- Publication:
-
PLANS 1986 - Position Location and Navigation Symposium
- Pub Date:
- 1986
- Bibcode:
- 1986pln..symp..468C
- Keywords:
-
- Error Analysis;
- Inertial Navigation;
- Kalman Filters;
- Laser Gyroscopes;
- Navigation Aids;
- Strapdown Inertial Guidance;
- Covariance;
- Global Positioning System;
- Numerical Integration;
- Ring Lasers;
- Tradeoffs;
- Space Communications, Spacecraft Communications, Command and Tracking